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Finding the Fourth Proportional to 519,301.20, 778,878.90 and 164,351.10

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Solution

The fourth proportional to 519,301.20, 778,878.90 and 164,351.10 is: 246,503.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,301.20 : 778,878.90 = 164,351.10 : x
  2. Step 2: Convert to fraction form
    519,301.20/778,878.90 = 164,351.10/x
  3. Step 3: Cross multiply
    519,301.20x = 778,878.90 × 164,351.10
  4. Step 4: Simplify right side
    519,301.20x = 128,009,603,981.79
  5. Step 5: Solve for x
    x = 128,009,603,981.79/519,301.20
  6. Step 6: Final answer
    x = 246,503.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.